Michl, G.; Torok, J.; Peczely, P.; Garamszegi, L. Z.; Schwabl, H.: Female collared flycatchers adjust yolk testosterone to male age, but not to attractiveness. Behavioral Ecology 16 (2), pp. 383 - 388 (2005)
Pilz, K. M.; Adkins-Regan, E.; Schwabl, H.: No sex difference in yolk steroid concentrations of avian eggs at laying. Biology Letters 1 (3), pp. 318 - 321 (2005)
Schwabl, H.; Flinks, H.; Gwinner, E.: Testosterone, reproductive stage, and territorial behavior of male and female European stonechats Saxicola torquata. Hormones and Behavior 47 (5), pp. 503 - 512 (2005)
Schwagmeyer, P. L.; Schwabl, H.; Mock, D. W.: Dynamics of biparental care in house sparrows: Hormonal manipulations of paternal contributions. Animal Behaviour 69, pp. 481 - 488 (2005)
Tschirren, B.; Saladin, V.; Fitze, P. S.; Schwabl, H.; Richner, H.: Maternal yolk testosterone does not modulate parasite susceptibility or immune function in great tit nestlings. Journal of Animal Ecology 74 (4), pp. 675 - 682 (2005)
Cariello, M. O.; Lima, M. R.; Schwabl, H.; Macedo, R. H.: Egg characteristics are unreliable in determining maternity in communal clutches of guira cuckoos Guira guira. Journal of Avian Biology 35 (2), pp. 117 - 124 (2004)
Macedo, R. H. F.; Cariello, M. O.; Pacheco, A. M.; Schwabl, H.: Significance of social parameters on differential nutrient investment in guira cuckoo, Guira guira, eggs. Animal Behaviour 68, pp. 685 - 694 (2004)
Pilz, K. M.; Quiroga, M.; Schwabl, H.; Adkins-Regan, E.: European starling chicks benefit from high yolk testosterone levels during a drought year. Hormones and Behavior 46 (2), pp. 179 - 192 (2004)
Sockman, K. W.; Schwabl, H.; Sharp, P. J.: Removing the confound of time in investigating the regulation of serial behaviours: Testosterone, prolactin and the transition from sexual to parental activity in male American kestrels. Animal Behaviour 67 (6), pp. 1151 - 1161 (2004)
Strasser, R.; Schwabl, H.: Yolk testosterone organizes behavior and male plumage coloration in house sparrows (Passer domesticus). Behavioral Ecology and Sociobiology 56 (5), pp. 491 - 497 (2004)
Tschirren, B.; Richner, H.; Schwabl, H.: Ectoparasite-modulated deposition of maternal androgens in great tit eggs. Proceedings of the Royal Society B: Biological Sciences 271 (1546), pp. 1371 - 1375 (2004)
Pilz, K. M.; Smith, H. G.; Sandell, M. I.; Schwabl, H.: Interfemale variation in egg yolk androgen allocation in the European starling: Do high-quality females invest more? Animal Behaviour 65, pp. 841 - 850 (2003)
Verboven, N.; Monaghan, P.; Evans, D. M.; Schwabl, H.; Evans, N.; Whitelaw, C.; Nager, R. G.: Maternal condition, yolk androgens and offspring performance: A supplemental feeding experiment in the lesser black-backed gull (Larus fuscus). Proceedings of the Royal Society B: Biological Sciences 270 (1530), pp. 2223 - 2232 (2003)
Groothuis, T. G.; Schwabl, H.: Determinants of within- and among-clutch variation in levels of maternal hormones in Black-Headed Gull eggs. Functional Ecology 16 (3), pp. 281 - 289 (2002)
Eising, C. M.; Eikenaar, C.; Schwabl, H.; Groothuis, T. G. G.: Maternal androgens in black-headed gull (Larus ridibundus) eggs: Consequences for chick development. Proceedings of the Royal Society B: Biological Sciences 268 (1469), pp. 839 - 846 (2001)
French, J. B.; Nisbet, I. C. T.; Schwabl, H.: Maternal steroids and contaminants in common tern eggs: A mechanism of endocrine disruption? Comparative biochemistry and physiology / C. 128 (1), pp. 91 - 98 (2001)
Sockman, K. W.; Schwabl, H.: Plasma corticosterone in nestling American kestrels: Effects of age, handling stress, yolk androgens, and body condition. General and Comparative Endocrinology 122 (2), pp. 205 - 212 (2001)
Sockman, K. W.; Schwabl, H.: Covariation of clutch size, laying date, and incubation tendency in the American Kestrel. The Condor 103 (3), pp. 570 - 578 (2001)
Sockman, K. W.; Schwabl, H.; Sharp, P. J.: Regulation of yolk-androgen concentrations by plasma prolactin in the American kestrel. Hormones and Behavior 40 (4), pp. 462 - 471 (2001)
Birkhead, T.; Schwabl, H.; Burke, T.: Testosterone and maternal effects - integrating mechanisms and function. Trends in Ecology and Evolution 15 (3), pp. 86 - 87 (2000)
Jenni, L.; Jenni-Eiermann, S.; Spina, F.; Schwabl, H.: Regulation of protein breakdown and adrenocortical response to stress in birds during migratory flight. American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 278 (5), pp. R1182 - R1189 (2000)
Sockman, K. W.; Schwabl, H.: Yolk androgens reduce offspring survival. Proceedings of the Royal Society B: Biological Sciences 267 (1451), pp. 1451 - 1456 (2000)
Sockman, K. W.; Schwabl, H.; Sharp, P. J.: The role of prolactin in the regulation of clutch size and onset of incubation behavior in the American kestrel. Hormones and Behavior 38 (3), pp. 168 - 176 (2000)
Schwabl, H.: Developmental changes and among-sibling variation of corticosterone levels in an altricial avian species. General and Comparative Endocrinology 116 (3), pp. 403 - 408 (1999)
Sockman, K. W.; Schwabl, H.: Daily estradiol and progesterone levels relative to laying and onset of incubation in canaries. General and Comparative Endocrinology 114 (2), pp. 257 - 268 (1999)
Sockman, K. W.; Schwabl, H.: Hypothermic tolerance in an embryonic American kestrel (Falco sparverius). Canadian Journal of Zoology-Revue Canadienne de Zoologie 76 (7), pp. 1399 - 1402 (1998)
Tchernichovski, O.; Schwabl, H.; Nottebohm, F.: Context determines the sex appeal of male zebra finch song. Animal Behaviour 55 (4), pp. 1003 - 1010 (1998)
Schwabl, H.: The contents of maternal testosterone in house sparrow Passer domesticus eggs vary with breeding conditions. Naturwissenschaften 84, pp. 406 - 408 (1997)
Fornasari, L.; Bottoni, L.; Schwabl, H.; Massa, R.: Testosterone in the breeding cycle of the male Red-backed Shrike Lanius collurio. Ethology, Ecology & Evolution 4 (2), pp. 193 - 196 (1994)
Gwinner, E.; Schwabl-Benzinger, I.; Schwabl, H.; Dittami, J.: Twenty-four hour melatonin profiles in a nocturnally migrating bird during and between migratory seasons. General and Comparative Endocrinology 90 (1), pp. 119 - 124 (1993)
Schwabl, H.: Yolk is a source of maternal testosterone for developing birds. Proceedings of the National Academy of Sciences of the United States of America 90 (24), pp. 11446 - 11450 (1993)
Gwinner, E.; Schwabl, H.; Schwabl-Benzinger, I.: The migratory time program of the garden warbler: Is there compensation for interruptions? Ornis Scandinavica 23 (3), pp. 264 - 270 (1992)
Schwabl, H.: Winter and breeding territorial behaviour and levels of reproductive hormones of migratory European Robins. Ornis Scandinavica 23 (3), pp. 271 - 276 (1992)
Schwabl, H.; Sonnenschein, E.: Antiphonal duetting and sex hormones in the tropical bush shrike Laniarius funebris (HARTLAUB). Hormones and Behavior 26 (3), pp. 295 - 307 (1992)
Kriner, E.; Schwabl, H.: Control of winter song and territorial aggression of female robins (Erithacus rubecula) by testosterone. Ethology 87 (1-2), pp. 37 - 44 (1991)
Schwabl, H.; Gwinner, E.; Benvenuti, S.; Ioalé, P.: Exposure of dunnocks (Prunella modularis) to their previous wintering site modifies autumnal activity pattern: Evidence for site recognition? Ethology 88 (1), pp. 35 - 45 (1991)
Schwabl, H.; Kriner, E.: Territorial aggression and song of male European robins (Erithacus rubecula) in autumn and spring: Effects of antiandrogen treatment. Hormones and Behavior 25 (2), pp. 180 - 194 (1991)
Why do primates have big brains? In the Panamanian rainforest, scientists pitted large-brained primates against smaller-brained mammals to find out who was the smartest forager
The first narrative nonfiction book about the pioneering animal tracking project ICARUS, written by its founder Martin Wikelski, is published by Greystone Books